<template>
     
  <div class="camera_outer">
    <div class="card_header">
      <span class="card_wenzi">人脸打卡上班</span>
    </div>
   
    <div class="assas">
      <div class="img_bg_camera">
        <video
          id="videoCamera"
          :width="videoWidth"
          :height="videoHeight"
          autoplay
        ></video>
        <canvas
          style="display: none"
          id="canvasCamera"
          :width="videoWidth"
          :height="videoHeight"
        ></canvas>
      </div>
      <div class="img_bg_camera">
        <img :src="zimgSrc" alt="" class="tx_img" />
        <el-button
          type="primary"
          class="del_img"
          v-if="zimgSrc != ''"
          @click="zimgSrc = ''"
          >删除</el-button
        >
      </div>
    </div>
    <div style="margin-top: 55px">
      <el-button type="primary" @click="getCompetence()">打开摄像头</el-button>
      <el-button type="primary" @click="stopNavigator()">关闭摄像头</el-button>
      <el-button type="primary" @click="setImage()">拍照</el-button>

      <el-button type="primary" @click="punchcard()">
        <span v-if="value1">上班打卡</span
        ><span v-else>样本上传</span></el-button
      > <el-switch
      v-model="value1"
      :width="60"
      active-text="上班打卡"
      inactive-text="样本上传"
    >
    </el-switch><el-switch
      v-model="qiandaodate"
      :disabled='is_switch'
      :width="60"
      active-text="上班签到"
      inactive-text="下班签到"
    >
    </el-switch>
    </div>
  </div>
</template>

<script>
import { Punchcard, Punchcardyang } from "network/api/punchcard";
export default {
  props: {},
  data() {
    return {
      is_switch:false,
      qiandaodate:true,
      value1: true,
      videoWidth: 300,
      videoHeight: 300,
      // imgSrc: "",
      zimgSrc: "",
      thisCancas: null,
      thisContext: null,
      thisVideo: null,
    };
  },
  watch:{
    'value1':function(val){
      console.log(val)
      if (val){
        this.is_switch=false
      }else{
        this.is_switch=true
      }
    }
  },
  mounted() {
    // this.getCompetence();
  },
  methods: {
    // 调用权限（打开摄像头功能）
    getCompetence() {
      var _this = this;
      this.thisCancas = document.getElementById("canvasCamera");
      this.thisContext = this.thisCancas.getContext("2d");
      this.thisVideo = document.getElementById("videoCamera");
      // 旧版本浏览器可能根本不支持mediaDevices，我们首先设置一个空对象
      if (navigator.mediaDevices === undefined) {
        navigator.mediaDevices = {};
      }
      // 一些浏览器实现了部分mediaDevices，我们不能只分配一个对象
      // 使用getUserMedia，因为它会覆盖现有的属性。
      // 这里，如果缺少getUserMedia属性，就添加它。
      if (navigator.mediaDevices.getUserMedia === undefined) {
        navigator.mediaDevices.getUserMedia = function (constraints) {
          // 首先获取现存的getUserMedia(如果存在)
          var getUserMedia =
            navigator.webkitGetUserMedia ||
            navigator.mozGetUserMedia ||
            navigator.getUserMedia;
          // 有些浏览器不支持，会返回错误信息
          // 保持接口一致
          if (!getUserMedia) {
            return Promise.reject(
              new Error("getUserMedia is not implemented in this browser")
            );
          }
          // 否则，使用Promise将调用包装到旧的navigator.getUserMedia
          return new Promise(function (resolve, reject) {
            getUserMedia.call(navigator, constraints, resolve, reject);
          });
        };
      }

      var constraints = {
        audio: false,
        video: {
          width: this.videoWidth,
          height: this.videoHeight,
          transform: "scaleX(-1)",
        },
      };
      console.log(
        navigator.mediaDevices.getUserMedia(constraints),
        123,
        constraints
      );
      navigator.mediaDevices
        .getUserMedia(constraints)
        .then(function (stream) {
          // 旧的浏览器可能没有srcObject
          if ("srcObject" in _this.thisVideo) {
            console.log(1222);
            _this.thisVideo.srcObject = stream;
          } else {
            console.log(2222);
            // 避免在新的浏览器中使用它，因为它正在被弃用。
            _this.thisVideo.src = window.URL.createObjectURL(stream);
          }
          _this.thisVideo.onloadedmetadata = function (e) {
            _this.thisVideo.play();
          };
        })
        .catch((err) => {
          console.log("打开摄像头报错");
          console.log(err);
        });
    },
    //  绘制图片（拍照功能）
    setImage() {
      if (this.thisVideo.srcObject.active == true) {
        var _this = this;
        // 点击，canvas画图
        //   console.log(_this.thisVideo.autoplay)

        _this.thisContext.drawImage(
          _this.thisVideo,
          0,
          0,
          _this.videoWidth,
          _this.videoHeight
        );
        // 获取图片base64链接
        var image = this.thisCancas.toDataURL("image/png");

        _this.zimgSrc = image;
        //   this.$emit("refreshDataList", this.imgSrc);
      } else {
        alert("请打开摄像头");
      }
    },
    // base64转文件
    dataURLtoFile(dataurl, filename) {
      var arr = dataurl.split(",");
      var mime = arr[0].match(/:(.*?);/)[1];
      var bstr = atob(arr[1]);
      var n = bstr.length;
      var u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      return new File([u8arr], filename, { type: mime });
    },
    // 关闭摄像头
    stopNavigator() {
      this.thisVideo.srcObject.getTracks()[0].stop();
    },
    async punchcard() {
      console.log(this.value1,1111111)
      let res = null
      if (this.zimgSrc==''){
        this.$message.error('请拍照');
        return ;

      }
      if (this.value1) {
        //已经迟到   或早退行为
        res = await Punchcard({
          imgerjinzhisrc: this.zimgSrc,
          phone: window.sessionStorage.getItem("phone"),
          userid: window.sessionStorage.getItem("userid"),
          qiandaodate:this.qiandaodate
        });
      } else {
        res = await Punchcardyang({
          imgerjinzhisrc: this.zimgSrc,
          phone: window.sessionStorage.getItem("phone"),
        });
      }

      console.log(res);
      if (res.status == "Yes") {
        this.$message.success(res.msg);
      } else {
        this.$message.error(res.msg);
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.del_img {
  margin-left: 250px;
}
.card_header {
  height: 60px;
  text-align: center;
  font-size: 30px;
  background: #ccff00;
}
.card_header .card_wenzi {
  line-height: 60px;
}
.camera_outer {
  position: relative;
  overflow: hidden;
  background-size: 100%;
}
.assas {
  display: flex;
  height: 350px;
}
.camera_outer video,
canvas,
.tx_img {
  -moz-transform: scaleX(-1);
  -webkit-transform: scaleX(-1);
  -o-transform: scaleX(-1);
  transform: scaleX(-1);
}
.camera_outer .btn_camera {
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 50px;
  background-color: rgba(0, 0, 0, 0.3);
  line-height: 50px;
  text-align: center;
  color: #ffffff;
}
.camera_outer .bg_r_img {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
}

.sfz_show {
  text-align: center;
  line-height: 300px;
}
.camera_outer .img_bg_camera {
  border: 1px solid white;
  flex: 1;
}
.camera_outer .img_bg_camera img {
  width: 300px;
  height: 300px;
}
.camera_outer .img_bg_camera .img_btn_camera {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background-color: rgba(0, 0, 0, 0.3);
  color: #ffffff;
}
.camera_outer .img_bg_camera .img_btn_camera .loding_img {
  width: 50px;
  height: 50px;
}
</style>
